http://www.city-data.com/forum/omaha/1850255-jason-jolkowski.html
This is a link to a fairly decent discussion of this case on an Omaha local forum. Some interesting stuff re mysterious happenings in the area of his disappearance.
One interesting idea was presented. He vanished apparently on trash pickup day. Someone might have lured him into a house under the pretext of needing help with their trash.
He vanished on trash pick up day ? Likely went from a dumpster into a trash landfill. jmo Can't imagine a motive, except for him knowing about something shady going on at school... JMO. OR, perhaps more likely, some bad blood with a person or persons in very close proximity to where he was last seen. JMO